use log::warn;
use webrender::RenderApiSender;
use wgpu_thread::WGPU;
pub use {wgpu_core as wgc, wgpu_types as wgt};
pub mod identity;
mod poll_thread;
mod wgpu_thread;
use std::borrow::Cow;
use std::collections::HashMap;
use std::sync::{Arc, Mutex};
use arrayvec::ArrayVec;
use euclid::default::Size2D;
pub use gpu_error::{Error, ErrorFilter, PopError};
use ipc_channel::ipc::{self, IpcReceiver, IpcSender};
pub use render_commands::RenderCommand;
use serde::{Deserialize, Serialize};
use servo_config::pref;
use webrender_api::{DocumentId, ImageData, ImageDescriptor, ImageKey};
use webrender_traits::{
WebrenderExternalImageApi, WebrenderExternalImageRegistry, WebrenderImageSource,
};
use wgc::id;
mod gpu_error;
mod ipc_messages;
mod render_commands;
pub use identity::*;
pub use ipc_messages::recv::*;
pub use ipc_messages::to_dom::*;
pub use ipc_messages::to_script::*;
pub use wgpu_thread::PRESENTATION_BUFFER_COUNT;
#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct WebGPU(pub IpcSender<WebGPURequest>);
impl WebGPU {
pub fn new(
webrender_api_sender: RenderApiSender,
webrender_document: DocumentId,
external_images: Arc<Mutex<WebrenderExternalImageRegistry>>,
wgpu_image_map: Arc<Mutex<HashMap<u64, PresentationData>>>,
) -> Option<(Self, IpcReceiver<WebGPUMsg>)> {
if !pref!(dom.webgpu.enabled) {
return None;
}
let (sender, receiver) = match ipc::channel() {
Ok(sender_and_receiver) => sender_and_receiver,
Err(e) => {
warn!(
"Failed to create sender and receiver for WGPU thread ({})",
e
);
return None;
},
};
let sender_clone = sender.clone();
let (script_sender, script_recv) = match ipc::channel() {
Ok(sender_and_receiver) => sender_and_receiver,
Err(e) => {
warn!(
"Failed to create receiver and sender for WGPU thread ({})",
e
);
return None;
},
};
if let Err(e) = std::thread::Builder::new()
.name("WGPU".to_owned())
.spawn(move || {
WGPU::new(
receiver,
sender_clone,
script_sender,
webrender_api_sender,
webrender_document,
external_images,
wgpu_image_map,
)
.run();
})
{
warn!("Failed to spawn WGPU thread ({})", e);
return None;
}
Some((WebGPU(sender), script_recv))
}
pub fn exit(&self, sender: IpcSender<()>) -> Result<(), &'static str> {
self.0
.send(WebGPURequest::Exit(sender))
.map_err(|_| "Failed to send Exit message")
}
}
#[derive(Default)]
pub struct WGPUExternalImages {
pub images: Arc<Mutex<HashMap<u64, PresentationData>>>,
pub locked_ids: HashMap<u64, Vec<u8>>,
}
impl WebrenderExternalImageApi for WGPUExternalImages {
fn lock(&mut self, id: u64) -> (WebrenderImageSource, Size2D<i32>) {
let size;
let data;
if let Some(present_data) = self.images.lock().unwrap().get(&id) {
size = present_data.size;
data = present_data.data.clone();
} else {
size = Size2D::new(0, 0);
data = Vec::new();
}
let _ = self.locked_ids.insert(id, data);
(
WebrenderImageSource::Raw(self.locked_ids.get(&id).unwrap().as_slice()),
size,
)
}
fn unlock(&mut self, id: u64) {
let _ = self.locked_ids.remove(&id);
}
}
pub struct PresentationData {
device_id: id::DeviceId,
queue_id: id::QueueId,
pub data: Vec<u8>,
pub size: Size2D<i32>,
unassigned_buffer_ids: ArrayVec<id::BufferId, PRESENTATION_BUFFER_COUNT>,
available_buffer_ids: ArrayVec<id::BufferId, PRESENTATION_BUFFER_COUNT>,
queued_buffer_ids: ArrayVec<id::BufferId, PRESENTATION_BUFFER_COUNT>,
buffer_stride: u32,
image_key: ImageKey,
image_desc: ImageDescriptor,
image_data: ImageData,
}
pub trait Transmute<U: id::Marker> {
fn transmute(self) -> id::Id<U>;
}
impl Transmute<id::markers::Queue> for id::Id<id::markers::Device> {
fn transmute(self) -> id::Id<id::markers::Queue> {
self.into_queue_id()
}
}
impl Transmute<id::markers::Device> for id::Id<id::markers::Queue> {
fn transmute(self) -> id::Id<id::markers::Device> {
unsafe { id::Id::from_raw(self.into_raw()) }
}
}